FAO fertilizer yearbook 

 - Rome  Food and Agriculture Organization of the United Nations    1983   
 - 143 
<br/><br/>Vol-32 & 33 
<br/><br/><label>Subjects--Topical Terms: </label><br/>  Agriculture<br/>  Fertilizers and manures
<br/><br/><label>Dewey Class. No.: </label>631.33025  / U58f